| Abstract Detail
Symbioses: Plant, Animal, and Microbe Interactions Taylor, Alexander [1], Qiu, Yin-Long [2]. Evolutionary History of Genes Recruited for Nodulation. Nodulation evolved multiple times independently but is restricted to the nitrogen-fixing clade of rosids. This phylogenetic distribution has raised questions about how many times nodulation originated and the degree of homology between different nodulating symbioses. Each examined nodulating lineage recruited genes for nodulation from an ancestral “common symbiotic” signaling pathway that mediates symbiosis with Arbuscular Mycorrhizae, suggesting that nodulation is an example of deep homology. In this study we combined genes associated with nodulation from multiple nodulating lineages with publicly available genomic and transcriptomic data to examine the evolutionary history of homologous genes from the “common symbiotic” pathway. We found multiple rounds of both tandem and whole genome duplication in these gene families, and differential recruitment of homologs for nodulation. In some cases, such as the subtilase gene family, the genes recruited for nodulation in different lineages were paralogs that diverged before the origin of angiosperms. These findings enhance our understanding of the deep homology of nodulation across different nodulating clades.
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1 - University of Michigan, Ecology and Evolutionary Biology, 830 N University, Ann Arbor, MI, 48104, USA
2 - University Of Michigan, Department Of Ecology And Evolutionary Biology, 830 N University Ave., Ann Arbor, MI, 48109-1048, USA
Keywords:
Deep Homology
nodulation
gene duplication
Gene tree.
Presentation Type: Poster
Session: P, Symbioses: Plant, Animal, and Microbe Interactions Posters
Location: Exhibit Hall/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PSB003
Abstract ID:352
Candidate for Awards:None |
